java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:18:34,899 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:18:34,900 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:18:34,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:18:34,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:18:34,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:18:34,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:18:34,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:18:34,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:18:34,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:18:34,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:18:34,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:18:34,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:18:34,921 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:18:34,922 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:18:34,924 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:18:34,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:18:34,927 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:18:34,928 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:18:34,929 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:18:34,930 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 04:18:34,931 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 04:18:34,931 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 04:18:34,932 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 04:18:34,932 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 04:18:34,933 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 04:18:34,934 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 04:18:34,934 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 04:18:34,934 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 04:18:34,934 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:18:34,934 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:18:34,935 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-04 04:18:34,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:18:34,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:18:34,954 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:18:34,955 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:18:34,955 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:18:34,955 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:18:34,955 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:18:34,955 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:18:34,955 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:18:34,956 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:18:34,956 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:18:34,956 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:18:34,956 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:18:34,956 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:18:34,956 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:18:34,956 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:18:34,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:18:34,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:18:34,957 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:18:34,957 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:18:34,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:18:34,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:18:34,958 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 04:18:34,958 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 04:18:34,958 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 04:18:34,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:18:35,002 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:18:35,004 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:18:35,005 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:18:35,006 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:18:35,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i [2018-02-04 04:18:35,155 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:18:35,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:18:35,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:18:35,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:18:35,161 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:18:35,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c23b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35, skipping insertion in model container [2018-02-04 04:18:35,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,175 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:18:35,206 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:18:35,313 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:18:35,335 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:18:35,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35 WrapperNode [2018-02-04 04:18:35,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:18:35,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:18:35,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:18:35,345 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:18:35,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... [2018-02-04 04:18:35,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:18:35,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:18:35,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:18:35,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:18:35,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:18:35,424 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure fail [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure merge_single_node [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure merge_pair [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure inspect_before [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure inspect_after [2018-02-04 04:18:35,425 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:18:35,425 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 04:18:35,425 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 04:18:35,425 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 04:18:35,425 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure fail [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure merge_single_node [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure merge_pair [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure seq_sort_core [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure inspect_before [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure inspect_after [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:18:35,426 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:18:35,427 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:18:36,029 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:18:36,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:18:36 BoogieIcfgContainer [2018-02-04 04:18:36,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:18:36,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:18:36,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:18:36,033 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:18:36,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:18:35" (1/3) ... [2018-02-04 04:18:36,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563b1618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:18:36, skipping insertion in model container [2018-02-04 04:18:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:35" (2/3) ... [2018-02-04 04:18:36,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563b1618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:18:36, skipping insertion in model container [2018-02-04 04:18:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:18:36" (3/3) ... [2018-02-04 04:18:36,036 INFO L107 eAbstractionObserver]: Analyzing ICFG merge_sort_true-unreach-call_true-valid-memsafety.i [2018-02-04 04:18:36,041 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:18:36,047 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 109 error locations. [2018-02-04 04:18:36,071 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:18:36,072 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:18:36,072 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 04:18:36,072 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 04:18:36,072 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:18:36,072 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:18:36,072 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:18:36,072 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:18:36,073 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:18:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2018-02-04 04:18:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-02-04 04:18:36,103 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:36,104 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:36,104 INFO L371 AbstractCegarLoop]: === Iteration 1 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1556477250, now seen corresponding path program 1 times [2018-02-04 04:18:36,110 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:36,110 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:36,155 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,155 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:36,156 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:36,196 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:36,223 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:36,223 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:18:36,225 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-04 04:18:36,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-04 04:18:36,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-04 04:18:36,328 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 2 states. [2018-02-04 04:18:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:36,357 INFO L93 Difference]: Finished difference Result 313 states and 338 transitions. [2018-02-04 04:18:36,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-04 04:18:36,357 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-02-04 04:18:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:36,366 INFO L225 Difference]: With dead ends: 313 [2018-02-04 04:18:36,366 INFO L226 Difference]: Without dead ends: 296 [2018-02-04 04:18:36,367 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-04 04:18:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-02-04 04:18:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-02-04 04:18:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-02-04 04:18:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 309 transitions. [2018-02-04 04:18:36,400 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 309 transitions. Word has length 9 [2018-02-04 04:18:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:36,400 INFO L432 AbstractCegarLoop]: Abstraction has 296 states and 309 transitions. [2018-02-04 04:18:36,400 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-04 04:18:36,400 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 309 transitions. [2018-02-04 04:18:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-04 04:18:36,401 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:36,401 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:36,401 INFO L371 AbstractCegarLoop]: === Iteration 2 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1087749341, now seen corresponding path program 1 times [2018-02-04 04:18:36,402 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:36,402 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:36,403 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,403 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:36,403 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:36,412 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:36,446 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:36,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:18:36,447 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:18:36,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:18:36,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:36,448 INFO L87 Difference]: Start difference. First operand 296 states and 309 transitions. Second operand 3 states. [2018-02-04 04:18:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:36,684 INFO L93 Difference]: Finished difference Result 339 states and 361 transitions. [2018-02-04 04:18:36,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:18:36,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-02-04 04:18:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:36,686 INFO L225 Difference]: With dead ends: 339 [2018-02-04 04:18:36,686 INFO L226 Difference]: Without dead ends: 338 [2018-02-04 04:18:36,687 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-02-04 04:18:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 300. [2018-02-04 04:18:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-02-04 04:18:36,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 314 transitions. [2018-02-04 04:18:36,701 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 314 transitions. Word has length 11 [2018-02-04 04:18:36,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:36,701 INFO L432 AbstractCegarLoop]: Abstraction has 300 states and 314 transitions. [2018-02-04 04:18:36,701 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:18:36,701 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 314 transitions. [2018-02-04 04:18:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:18:36,702 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:36,702 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:36,702 INFO L371 AbstractCegarLoop]: === Iteration 3 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:36,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1650764336, now seen corresponding path program 1 times [2018-02-04 04:18:36,703 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:36,703 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:36,704 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,704 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:36,704 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:36,720 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:36,776 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:36,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:18:36,777 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:18:36,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:18:36,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:18:36,777 INFO L87 Difference]: Start difference. First operand 300 states and 314 transitions. Second operand 4 states. [2018-02-04 04:18:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:36,975 INFO L93 Difference]: Finished difference Result 328 states and 346 transitions. [2018-02-04 04:18:36,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:18:36,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-04 04:18:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:36,976 INFO L225 Difference]: With dead ends: 328 [2018-02-04 04:18:36,977 INFO L226 Difference]: Without dead ends: 328 [2018-02-04 04:18:36,977 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-02-04 04:18:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 298. [2018-02-04 04:18:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-02-04 04:18:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 312 transitions. [2018-02-04 04:18:36,988 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 312 transitions. Word has length 13 [2018-02-04 04:18:36,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:36,989 INFO L432 AbstractCegarLoop]: Abstraction has 298 states and 312 transitions. [2018-02-04 04:18:36,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:18:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 312 transitions. [2018-02-04 04:18:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:18:36,989 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:36,990 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:36,990 INFO L371 AbstractCegarLoop]: === Iteration 4 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1650764335, now seen corresponding path program 1 times [2018-02-04 04:18:36,990 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:36,990 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:36,991 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,992 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:36,992 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:36,999 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:37,016 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:37,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:18:37,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:18:37,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:18:37,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:18:37,016 INFO L87 Difference]: Start difference. First operand 298 states and 312 transitions. Second operand 4 states. [2018-02-04 04:18:37,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:37,221 INFO L93 Difference]: Finished difference Result 315 states and 332 transitions. [2018-02-04 04:18:37,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:18:37,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-04 04:18:37,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:37,223 INFO L225 Difference]: With dead ends: 315 [2018-02-04 04:18:37,223 INFO L226 Difference]: Without dead ends: 315 [2018-02-04 04:18:37,223 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-02-04 04:18:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 296. [2018-02-04 04:18:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-02-04 04:18:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 310 transitions. [2018-02-04 04:18:37,231 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 310 transitions. Word has length 13 [2018-02-04 04:18:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:37,232 INFO L432 AbstractCegarLoop]: Abstraction has 296 states and 310 transitions. [2018-02-04 04:18:37,232 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:18:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 310 transitions. [2018-02-04 04:18:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-04 04:18:37,232 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:37,233 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:37,233 INFO L371 AbstractCegarLoop]: === Iteration 5 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:37,233 INFO L82 PathProgramCache]: Analyzing trace with hash 45229303, now seen corresponding path program 1 times [2018-02-04 04:18:37,233 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:37,233 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:37,234 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,234 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:37,234 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:37,243 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:37,256 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:37,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:18:37,256 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:18:37,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:18:37,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:37,257 INFO L87 Difference]: Start difference. First operand 296 states and 310 transitions. Second operand 3 states. [2018-02-04 04:18:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:37,271 INFO L93 Difference]: Finished difference Result 315 states and 327 transitions. [2018-02-04 04:18:37,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:18:37,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-02-04 04:18:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:37,272 INFO L225 Difference]: With dead ends: 315 [2018-02-04 04:18:37,273 INFO L226 Difference]: Without dead ends: 314 [2018-02-04 04:18:37,273 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-02-04 04:18:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 295. [2018-02-04 04:18:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-02-04 04:18:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 308 transitions. [2018-02-04 04:18:37,279 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 308 transitions. Word has length 17 [2018-02-04 04:18:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:37,279 INFO L432 AbstractCegarLoop]: Abstraction has 295 states and 308 transitions. [2018-02-04 04:18:37,279 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:18:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 308 transitions. [2018-02-04 04:18:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:18:37,279 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:37,279 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:37,280 INFO L371 AbstractCegarLoop]: === Iteration 6 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash 963226955, now seen corresponding path program 1 times [2018-02-04 04:18:37,280 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:37,280 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:37,280 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,281 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:37,281 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:37,291 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:37,349 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:37,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:18:37,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:18:37,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:18:37,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:18:37,349 INFO L87 Difference]: Start difference. First operand 295 states and 308 transitions. Second operand 4 states. [2018-02-04 04:18:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:37,513 INFO L93 Difference]: Finished difference Result 329 states and 345 transitions. [2018-02-04 04:18:37,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:18:37,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-02-04 04:18:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:37,515 INFO L225 Difference]: With dead ends: 329 [2018-02-04 04:18:37,515 INFO L226 Difference]: Without dead ends: 329 [2018-02-04 04:18:37,515 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-02-04 04:18:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 293. [2018-02-04 04:18:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-02-04 04:18:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 306 transitions. [2018-02-04 04:18:37,519 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 306 transitions. Word has length 20 [2018-02-04 04:18:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:37,519 INFO L432 AbstractCegarLoop]: Abstraction has 293 states and 306 transitions. [2018-02-04 04:18:37,520 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:18:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 306 transitions. [2018-02-04 04:18:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:18:37,520 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:37,520 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:37,520 INFO L371 AbstractCegarLoop]: === Iteration 7 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:37,520 INFO L82 PathProgramCache]: Analyzing trace with hash 963226954, now seen corresponding path program 1 times [2018-02-04 04:18:37,521 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:37,521 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:37,522 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,522 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:37,522 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:37,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:37,549 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:37,549 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:18:37,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:18:37,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:18:37,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:18:37,550 INFO L87 Difference]: Start difference. First operand 293 states and 306 transitions. Second operand 4 states. [2018-02-04 04:18:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:37,700 INFO L93 Difference]: Finished difference Result 316 states and 331 transitions. [2018-02-04 04:18:37,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:18:37,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-02-04 04:18:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:37,704 INFO L225 Difference]: With dead ends: 316 [2018-02-04 04:18:37,705 INFO L226 Difference]: Without dead ends: 316 [2018-02-04 04:18:37,705 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-02-04 04:18:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 291. [2018-02-04 04:18:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-02-04 04:18:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 304 transitions. [2018-02-04 04:18:37,710 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 304 transitions. Word has length 20 [2018-02-04 04:18:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:37,710 INFO L432 AbstractCegarLoop]: Abstraction has 291 states and 304 transitions. [2018-02-04 04:18:37,711 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:18:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 304 transitions. [2018-02-04 04:18:37,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-04 04:18:37,711 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:37,711 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:37,711 INFO L371 AbstractCegarLoop]: === Iteration 8 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:37,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1725402921, now seen corresponding path program 1 times [2018-02-04 04:18:37,712 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:37,712 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:37,712 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,712 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:37,712 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:37,722 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:37,750 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:37,750 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:18:37,750 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:18:37,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:18:37,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:37,750 INFO L87 Difference]: Start difference. First operand 291 states and 304 transitions. Second operand 5 states. [2018-02-04 04:18:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:37,794 INFO L93 Difference]: Finished difference Result 331 states and 347 transitions. [2018-02-04 04:18:37,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 04:18:37,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-02-04 04:18:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:37,796 INFO L225 Difference]: With dead ends: 331 [2018-02-04 04:18:37,796 INFO L226 Difference]: Without dead ends: 331 [2018-02-04 04:18:37,796 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-02-04 04:18:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 291. [2018-02-04 04:18:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-02-04 04:18:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 303 transitions. [2018-02-04 04:18:37,804 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 303 transitions. Word has length 27 [2018-02-04 04:18:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:37,804 INFO L432 AbstractCegarLoop]: Abstraction has 291 states and 303 transitions. [2018-02-04 04:18:37,804 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:18:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 303 transitions. [2018-02-04 04:18:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-02-04 04:18:37,805 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:37,805 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:37,807 INFO L371 AbstractCegarLoop]: === Iteration 9 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:37,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1961365059, now seen corresponding path program 1 times [2018-02-04 04:18:37,807 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:37,808 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:37,808 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,808 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:37,809 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:37,827 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:37,879 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:37,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:18:37,879 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:18:37,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:18:37,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:18:37,880 INFO L87 Difference]: Start difference. First operand 291 states and 303 transitions. Second operand 6 states. [2018-02-04 04:18:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:38,204 INFO L93 Difference]: Finished difference Result 309 states and 324 transitions. [2018-02-04 04:18:38,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:18:38,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-02-04 04:18:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:38,206 INFO L225 Difference]: With dead ends: 309 [2018-02-04 04:18:38,206 INFO L226 Difference]: Without dead ends: 309 [2018-02-04 04:18:38,207 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:18:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-02-04 04:18:38,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 286. [2018-02-04 04:18:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-02-04 04:18:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 300 transitions. [2018-02-04 04:18:38,213 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 300 transitions. Word has length 33 [2018-02-04 04:18:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:38,213 INFO L432 AbstractCegarLoop]: Abstraction has 286 states and 300 transitions. [2018-02-04 04:18:38,214 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:18:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 300 transitions. [2018-02-04 04:18:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-02-04 04:18:38,214 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:38,214 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:38,215 INFO L371 AbstractCegarLoop]: === Iteration 10 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:38,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1961365060, now seen corresponding path program 1 times [2018-02-04 04:18:38,215 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:38,215 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:38,216 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:38,216 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:38,216 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:38,227 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:18:38,315 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:38,315 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:18:38,315 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:18:38,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:18:38,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:38,316 INFO L87 Difference]: Start difference. First operand 286 states and 300 transitions. Second operand 7 states. [2018-02-04 04:18:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:38,636 INFO L93 Difference]: Finished difference Result 359 states and 375 transitions. [2018-02-04 04:18:38,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:18:38,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2018-02-04 04:18:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:38,637 INFO L225 Difference]: With dead ends: 359 [2018-02-04 04:18:38,638 INFO L226 Difference]: Without dead ends: 359 [2018-02-04 04:18:38,638 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-02-04 04:18:38,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-02-04 04:18:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 322. [2018-02-04 04:18:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-02-04 04:18:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 339 transitions. [2018-02-04 04:18:38,643 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 339 transitions. Word has length 33 [2018-02-04 04:18:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:38,643 INFO L432 AbstractCegarLoop]: Abstraction has 322 states and 339 transitions. [2018-02-04 04:18:38,643 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:18:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 339 transitions. [2018-02-04 04:18:38,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-02-04 04:18:38,644 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:38,644 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:38,645 INFO L371 AbstractCegarLoop]: === Iteration 11 === [merge_pairErr19RequiresViolation, merge_pairErr24RequiresViolation, merge_pairErr4RequiresViolation, merge_pairErr11RequiresViolation, merge_pairErr16RequiresViolation, merge_pairErr7RequiresViolation, merge_pairErr9RequiresViolation, merge_pairErr2RequiresViolation, merge_pairErr14RequiresViolation, merge_pairErr29RequiresViolation, merge_pairErr17RequiresViolation, merge_pairErr6RequiresViolation, merge_pairErr27RequiresViolation, merge_pairErr26RequiresViolation, merge_pairErr3RequiresViolation, merge_pairErr13RequiresViolation, merge_pairErr23RequiresViolation, merge_pairErr15RequiresViolation, merge_pairErr0RequiresViolation, merge_pairErr10RequiresViolation, merge_pairErr25RequiresViolation, merge_pairErr20RequiresViolation, merge_pairErr22RequiresViolation, merge_pairErr12RequiresViolation, merge_pairErr5RequiresViolation, merge_pairErr18RequiresViolation, merge_pairErr21RequiresViolation, merge_pairErr1RequiresViolation, merge_pairErr28RequiresViolation, merge_pairErr8RequiresViolation, merge_single_nodeErr4RequiresViolation, merge_single_nodeErr0RequiresViolation, merge_single_nodeErr9RequiresViolation, merge_single_nodeErr7RequiresViolation, merge_single_nodeErr11RequiresViolation, merge_single_nodeErr2RequiresViolation, merge_single_nodeErr1RequiresViolation, merge_single_nodeErr13RequiresViolation, merge_single_nodeErr6RequiresViolation, merge_single_nodeErr5RequiresViolation, merge_single_nodeErr10RequiresViolation, merge_single_nodeErr3RequiresViolation, merge_single_nodeErr12RequiresViolation, merge_single_nodeErr8RequiresViolation, seq_sort_coreErr13RequiresViolation, seq_sort_coreErr7RequiresViolation, seq_sort_coreErr6RequiresViolation, seq_sort_coreErr10RequiresViolation, seq_sort_coreErr1RequiresViolation, seq_sort_coreErr3RequiresViolation, seq_sort_coreErr8RequiresViolation, seq_sort_coreErr12RequiresViolation, seq_sort_coreErr11RequiresViolation, seq_sort_coreErr0RequiresViolation, seq_sort_coreErr4RequiresViolation, seq_sort_coreErr5RequiresViolation, seq_sort_coreErr2RequiresViolation, seq_sort_coreErr9RequiresViolation, inspect_beforeErr15RequiresViolation, inspect_beforeErr7RequiresViolation, inspect_beforeErr11RequiresViolation, inspect_beforeErr3RequiresViolation, inspect_beforeErr2RequiresViolation, inspect_beforeErr10RequiresViolation, inspect_beforeErr16RequiresViolation, inspect_beforeErr1RequiresViolation, inspect_beforeErr6RequiresViolation, inspect_beforeErr18RequiresViolation, inspect_beforeErr13RequiresViolation, inspect_beforeErr0RequiresViolation, inspect_beforeErr9RequiresViolation, inspect_beforeErr4RequiresViolation, inspect_beforeErr17RequiresViolation, inspect_beforeErr8RequiresViolation, inspect_beforeErr12RequiresViolation, inspect_beforeErr14RequiresViolation, inspect_beforeErr5RequiresViolation, inspect_beforeErr19RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, inspect_afterErr8RequiresViolation, inspect_afterErr10RequiresViolation, inspect_afterErr1RequiresViolation, inspect_afterErr0RequiresViolation, inspect_afterErr6RequiresViolation, inspect_afterErr7RequiresViolation, inspect_afterErr11RequiresViolation, inspect_afterErr5RequiresViolation, inspect_afterErr2RequiresViolation, inspect_afterErr4RequiresViolation, inspect_afterErr3RequiresViolation, inspect_afterErr9RequiresViolation]=== [2018-02-04 04:18:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash 816569686, now seen corresponding path program 1 times [2018-02-04 04:18:38,645 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:38,645 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:38,646 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:38,646 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:38,646 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:38,662 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:38,668 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-04 04:18:38,671 INFO L168 Benchmark]: Toolchain (without parser) took 3515.84 ms. Allocated memory was 405.8 MB in the beginning and 701.0 MB in the end (delta: 295.2 MB). Free memory was 362.7 MB in the beginning and 570.1 MB in the end (delta: -207.4 MB). Peak memory consumption was 87.8 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:38,672 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 405.8 MB. Free memory is still 369.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:18:38,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.26 ms. Allocated memory is still 405.8 MB. Free memory was 362.7 MB in the beginning and 350.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:38,672 INFO L168 Benchmark]: Boogie Preprocessor took 39.10 ms. Allocated memory is still 405.8 MB. Free memory was 350.8 MB in the beginning and 348.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:38,672 INFO L168 Benchmark]: RCFGBuilder took 645.13 ms. Allocated memory is still 405.8 MB. Free memory was 348.1 MB in the beginning and 276.5 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:38,673 INFO L168 Benchmark]: TraceAbstraction took 2640.36 ms. Allocated memory was 405.8 MB in the beginning and 701.0 MB in the end (delta: 295.2 MB). Free memory was 276.5 MB in the beginning and 570.1 MB in the end (delta: -293.5 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:38,673 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 405.8 MB. Free memory is still 369.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 188.26 ms. Allocated memory is still 405.8 MB. Free memory was 362.7 MB in the beginning and 350.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 39.10 ms. Allocated memory is still 405.8 MB. Free memory was 350.8 MB in the beginning and 348.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 645.13 ms. Allocated memory is still 405.8 MB. Free memory was 348.1 MB in the beginning and 276.5 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2640.36 ms. Allocated memory was 405.8 MB in the beginning and 701.0 MB in the end (delta: 295.2 MB). Free memory was 276.5 MB in the beginning and 570.1 MB in the end (delta: -293.5 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/merge_sort_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-18-38-678.csv Received shutdown request...